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How to run multiple Python versions on Windows

I had two versions of Python installed on my machine (versions 2.6 and 2.5). I want to run 2.6 for one project and 2.5 for another. ...
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Flatten List in LINQ

...nt>> but i want to return only List<int> so i want to merge all my record in my IEnumerable<List<int>> to only one array. ...
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ActiveRecord, has_many :through, and Polymorphic Associations

...on. :source should points to the polymorphic belongs_to relationship. Then all you need to do is specify :source_type for the relationship you're trying to define. This fix to the Widget model should allow you do exactly what you're looking for. class Widget < ActiveRecord::Base has_many :wid...
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Batch file: Find if substring is in string (not in a file)

...not a constant (like bcd) but was instead a variable. After much time I finally figured it out. Assuming searchVal has been declared, "x!str1:%searchVal%=!"=="x%str1%" – Gary Brunton Jul 3 '13 at 19:35 ...
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How can I detect whether an iframe is loaded?

...y on("load"). (Unfortunately, the docs don't quite make clear that that's all you need to do.) – Teepeemm Oct 5 '14 at 0:25 1 ...
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How to output a comma delimited list in jinja python template?

... This is awesome, especially at the end of the loop in html – Sinux Aug 27 '15 at 14:38 8 ...
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How to show “Done” button on iPhone number pad

...oad { [super viewDidLoad]; UIToolbar* numberToolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)]; numberToolbar.barStyle = UIBarStyleBlackTranslucent; numberToolbar.items = @[[[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:se...
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What is the Comonad typeclass in Haskell?

...Comonad typeclass are also welcome). I've vaguely heard about Comonad, but all I really know about it is that is provides extract :: w a -> a , sort of a parallel to Monad's return :: a -> m a . ...
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RegEx: Smallest possible match or nongreedy match

How do I tell RegEx (.NET version) to get the smallest valid match instead of the largest? 3 Answers ...
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git working on two branches simultaneously

...r, with a more robust mechanism where those "linked" working trees are actually recorded in the main repo new $GIT_DIR/worktrees folder (so that work on any OS, including Windows). Again, once you have cloned a repo (in a folder like /path/to/myrepo), you can add worktrees for different branches in...